Punching-machine.



PATENTED MAR. 19, 1907.

N0.'847 .535, J. WYTMAN.

PUNCHING MACHINE.

APPLICATION FILED MAR. 10, 19064 '3 SHEETS-SHEET 2.

INVENTOR. A

PATBNTEDMAR. 19, 1907.y J. WYTMAN. PUNCHING MACHINE. APPLICATION FILED MAR. 10.A 1906.

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UNITED STATES PATENT oEEioE.

JAN WYTMAN, OF AVALON, PENNSYLVANIA.

PUNGHING-WIACHIN El.

To (1l/ whom it may concern.-

Be it known that I, JAN WYTiLiN, a resident oi' Avalon, in the county or' Allegheny and State o'll Pennsylvania', have invented a .new and useful Improvement in Punching- Machines; and I do hereby declare the -rollo ing to be a full, clear, and exact descriptio thereof.

This invention relates especially to punching mechanism, although it may be applied to other metal-working tools vs herein operations are to be perrormed. on a blank at intervals.

'I` he present invention is designed for punching a series oi" holes in a plate or other blank and its object is to greatly expedito the work, to dispense. with laying out the holes to be punched on the blank, and to more accurately position the punched holes. In many kinds of structural ironwork it is necessary to punch a considerable number or rivet or bolt holes in a plate or other blank, which holes must be quite accurately positioned, so as to rivet together with another member or members similarly punched. Heretolore this work has been done by laying out the positions of the holes to be punched directly on the blank and then punching the n same. This requires a large amount or labor,l

as the laying-out operation has to be repeated on each. blank. Furthermore, the punch operators are liable not to punch the holes exactly on' center, so that more or less deviation Yfrom the true positions of the holes generally occurs, and 4this necessitates considerablelabor irLreaming said holes.

My invention is intended to overcome these defects; and it consists, generally stated, in using a templet in connection w ith the punching-machine, which templet does away v\ ith the necessity of laying ofi' the holes on the blank and serves the function of positioning the work, so thatgreater accuracy in the positions of the punched holes is secured' In the mechanism designed the templet and work-holding table are arranged to be moved in unison both laterally and longitudinally, these movements being ellected by easily-controllal)le mcchzmism, so that the parts can be moved to the desired position.'

Cooperating with the templet is an index-pin or some member which when it registers w ith a hole or contact on the templet closes a circ'uit, which either operates the punch or renders the punch-actuating mechanism operative, so as to punch the hole.

Specification of Letters Patent.

Application lled March 10, 1906. Serial No. 305,290.

Patented March 19. 1907.

The invention also comprises other features of invention, such as reducing-gearing,

'which enables the use oia small templet with large plates, and an arrangement or controlling levers'rand switches whosemanipulation erl'ects the necessary movements or all parts of the mechanism, thus enabling a single workman to perform the work which heretofore has required several.

The invention also comprises certain details in the arrangement or mechanism hereinafter described and claimed.

ln the accompanying drawings, Figure 1 is a plan view ol: my invention, sho ing it applied to punching mechanism. Fig. 2 is a vertical longitudinal section of the same on the line 2 2, Fig. 1. Fig. 3 is a transverse Section on the lineI 3 3, Fig. 1. Fig. 4 is a similar view on the line +L '4, Fig. 1. Fig. 5 i's a detailed view of one ol the controlling-levers and showing in diagram the switch and circuits controlled thereby. Fig. 6 is a detailed Sectional view of the friction driving mechanism and its actuating parts. 'Fig 7 is a diagrammatic view illustrating a templet for punching holes in a straight line, and Fig. 8 is a view ol the work correspomling to the templet shown in Fig. 7. i

In the drawings a punching-machine is shown at 1, this comprising asuitable work holder or support 2 and punch 3, which latter is vertically reciprocated by means not shown. The driving means for the punch is shown as belt-pulleys -1, geared to a wheel 5 on the punch-actuating shaft. A suitable clutch (i connects the gear to the punch-- actuating shaft. Normally the clutch is held out of engagement by means of a pin 7, which is normally held in engagement with a cam-face 8 on the clutch by a spring 9. To render the .punch active, the pin 7 must be drawn downwardly against the tension of the spring, thus permitting the counterweight 1() to throw the clutch in. For accomplishing this I have provided alever 11, connected at one end to the pin 7 audits opposite end to the lcore or armaturel 12 of a'solenoid 13 or other electromagnet. i

The Work support or table is in the form' of a double carriage, the lower carriage 15 being longitudinally movable ol the ways or rails 16, While the upper carriage 17 is movable transversely on suitable ways 18 on the- IOO IIO

of the plate 19 or other blank underneath the punch 3.

Coperating with the work-table I provide a suitable templet 20, which will be provided with holes, recesses, or contacts corresponding to the holes to be punched in the plate 19. Thistemplet is carried by a suitable support or table 21, which also is mounted'to move both transversely and longitudinally, corresponding to the movements of the worksupporting table. As shown, the table 21 is movable transversely in ways 22, formed on a carriage 23, which is movable longitudinally on the track 24.

Suitable mechanism is provided for moving the work-table and templettable in unison. .Various forms of mechanism will adapt themselves for this purpose. The specific mechanism shown in the drawings comprises a longitudinal shaft 26, mounted in suitable bearings and having a screw 27 engaging the longitudinally-movable'wOrk-supporting car- Iiage 15 and another screw 2S engaging the longitudinally-inovable templet-supporting carriage 23. The transversely-1uovable work-supporting carriage 17 is 'engaged by two screws 30, which are connected by suitable beveled gears 31 with a longitudinal shaft 32, and the tra.nsversely-inovable templet-supporting carriage 21 is similarly engaged by a screw 33, which is connected to the same shaft 32 by beveled gears 34. It is obvious that the rotation of the shaft 26 moves both the work-support and the templet-support longitudinally, while a rotation of the shaft 32 moves said supports trans versely.

Mechanism is provided for securing the longitudinal and transverse movements independently.. The particular mechanism shown comprises a shaft 36, belted to the 'main drive-shaft 4 or driven from any other source of power and geared to two shafts 39 nad 40, respectively. The shaft 39 carries a friction-disk 41, with which meshes a friction-wheel 42 on the* shaft 26. The shaft 40 likewise carries a friction-disk 43, which engages a friction-wheel 44 on a' counter-shaft 45, geared to the shaft 32. The frictionwheels 42 and 44 are movable on their re spective shafts, so that they can be moved either to the center of their respective disks or to either side of said centers, so that thereby' either or both of the shafts 26 or 32 may remain stationary or driven in either direction.

The movements of the frietion-wheels-42 and 44 are effected by ordinary levers or b v power. As shown, a lever 48 is provided for moving the friction-wheel 44, while a similar lever 49 is connected to the friction-wheel 42. yConsequently the transverse and longitudi- `nal movements of the templet and work sr portsj are independently Icontrolled. The

evers are.y connected tothe trictionfwheels by means of racks 5() and segments 5l. In order that asmall ten'iplet'ma)Y be used, suit,- able reducing-gearing is intrmluced in lzoth the shafts 27 and'32, these beingr indicated, respectively, at 53 and 54. This reducinggearing may be of any type suitable for rcducing the travel of the tcmpiet-support. ltI does not, however, interfere with the templet-support beingr moved in the same direction and in unison ith the vorl support.

Coiiperatinpr with thc tcmplet is a suitable index-mn 55, adapted upon proper move ment of the tcmplct to drop into one of the several holes in said templct. When this occurs, it indicates that the work-support is in proper position for punching. l provide means whereby the index-pin serves to render the puncli-operating mechanism active. This comprises an electric circuit arrangement and switch. (Shown in Fig. 5.) As shown in said figure, the index-pin 55 is the core or armature of a solenoid or other electronuignet 56. At its upper end the index-pin arlries circuit-closing devices 57, and said pin is normally held downwnrdl)Y by means of a spring 58, Normallj'. however, the end of the `pm rests on 4the templet, so that the con- -tacts 57 are held open; but when the pin drop into a hole the circuit is closed at this point. In conjinction with. the solenoid is a suitable switch 60,'which comprises a central contact 61, two side contacts 62, and twoiend contacts 63, all of said. contacts being set on an arc of a circle, as shown. (,operating with these contacts is a suitable circuit-closer 64, having a central contact-point 65 and two side contact-points 66. T 11e (.ircuit-closer 64 is secured to a suitable lever 67. pivotcd at 63.

The current maybe derived from any suitable source, such as the positive main 7() and negative main 71. The l'iositivc main 70 is connected to the central contact 6l. The side contacts62 are connected b v a nire 73 with the solenoid 13. Said solenoid is 'also connected by the wire 74 n ith one of the con- Vtacts of the circvit-elcser at 57, while the other of the contactsl of said ci1c1:it-closer is connected to the negative main 71. The end contacts 63 are connected by the wire 75 with the solenoid 56, and said solenoid is also connected by wire 76 to the negative main 7l Eas shown.

held against displacement by setscrew 80. When the friction-wheel 42 rests upon the disk 79, it is not'rotated, and it is only when it is moved to the disk-'face at either side of 5 said central zone that the shaft 26 is rotated.

In practicethefrictiomdisk 43 may be provided with a similar inactive zone. The arrangement is such that only while the wheel 42 is in the inactive zone of the disk 41 is the 1o electric system operative. This is accomplished by providing in the main circuit a suitable switch 83, which is actuated by the rod 79 and which switch comprises a suitable Y switch-lever coperating l'with a cont-act 85, 15.. said contact being of such length that the circuit is closed only whenthe friction-wheel -42 is in the inactiveA zone 79 of thedisk 41. -This inactive zone is of suHicient'size to permit a ,considerable movement of the lever 49 vzo. and throughl the lsame of the switch 61 with-v fout rotating the shaft 26, so that the necessary .movement of the switch 61 to effect the severalchanges of circuit necessary for the operation ofthe machine may be performed z5 while the work and templet supporting tables i .are at rest.

' *The operation of the mechanism is as follows: The main drive-shaft and gear 5 of the punch-actuating shaft, shafts 36, 39, 4and 40,

3o with friction-disks 41 and 43, rotate continuously. The pin 7 normally holds the clutch 6 'o` en, so that the punch will not be actuated.

e frictionfwheels 42 and 44 likewise Will be held at the centers of their disks 41 and 43,

3 5 so that the receive no rotary movement, and the wor and templet supporting tables will bestationary. The spring 58 'normally presses the indexin 55 down onto the templet.. 'The wor having been clamped 4o. on the work-supporting table, the operator then manipulates either one or both of the `levers 48 and 49 to secure the necessarymovements and in the required direction of both the templet and the work By means" l 'of the lever -48 the friction-wheel 44 maybe moved to'ei'ther side of the center of thel disk 43, thus effecting the transverse movement of both th'ejternplet and work support and in Veither direction, dependingl upon which side ..50 ofthe center of the disk 43 the wheel 44 has v .been moved. In a similar way by means of the lever 49 the friction-wheel 42 may be moved to either side of the center of the disk 41, thus effecting the longitudinal-movement i of the templet and work support and in either direction By' proper manipulation of these levers the' templet-sup ort is moved until a hole in the templet is rought under.

, th.e* ir.deX'-pin g55. The operator Watches 6o only the movement of the templet, so as to get a hole therein underneath the index-pin. As soon as this is effected the y pin drops down into the hole, and the operator then knows that the 'Work-support has been moved in the samedileetions and corresponding .dis-

.of the spring 9.

to the negative'main.

tances to the templet-support vand is in position for punching. He immediately moves the wheels 42 and 44 to the centers of their respective disks, thus stopping any further movement of eitherthe templet or the work. In dropping into the hole in the templet the pin 55 has closed the circuit at .the contacts 457, and as soon as the lever 49 has been moved far enough to bring the wheel 42 into .the neutral orinactive zone in the disk 41 the 7g circuit will also be closed at 83. The operator can then move the lever 49 within the limits of the inactive zone in the disk 41 in order to effect the necessary circuit changes. He moves the lever 49 to its central position, thus. bringing the switch 61 tovcentral osi'- tion. (Shown in Fig. 5.). The current rom the positive main then passes from contact 61. through the switch member 64 to contact 62 and thence through wire 73, solenoid 13, *.85 wires 74 to the negative main. 'Ihis energizes the solenoid 13, drawingr upon the core 12 and moving the pin 7 against the tension This releases the clutch 6 and causes the actuation of the punch 3 to punch the hole. The operator then at once moves the lever 49 either to the right or left, so as to .bringthe side contacts 66 of the switch member onto one or the other of the end contacts 63. Thecentral contact 65 of 95 the switch member will still bear on contact 61. The circuit. then is from the contact 61 through the switch-lever to one ofthe contacts 63 by wire 75 to solenoid 56 and thence As soon as' the solenoid 13 has been denergized the spring 9 throws the pin 7' into engagement with the cam-face onclutch 6, thus disengaging the clutch and stoppingl the punch. The ,f energization of the solenoid 56 draws the pin 55 up, thus disengaging the same from the templet'and permitting further movement of the templet and Work support. The operator then moves the. templet. and work supportby proper vmanipulations of the levers 4S and 49 and brings another hole inl the templet underneath the index-pin 55, when the toregoing operations will be repeated.

By means of the mechanism described a single operator is enabled to punch a plate or other 'blank with accuracy and without the necessity-of laying oil' the work'ou each blank. 'lhe amount of labor is very greatly reduced over existing practice and the holes are' also positioned with much greater accuracy, thus doing away with the reaming which is always necessary with blanks punched in the old way. rlhe templet will ofcom se be formed withl accuracy and can be used over and over again. The templet may be of non-conducting material provided with eon- .tacts corresponding with t'he holes to be solenoid 56. A .13o

When punching a row of holes on a very long bar, as shown m Fig. 8, it might require a teniplet of'prohibitive length. For such purpose I make use of a templet such as shown in Fig; 7 in which the holes are arranged on diagonal lines. In that case the work-supporting table will have longitudinal movement only,while the templet will be moved diagonally, so that the templet'will traverse adiagonal line under the index-pin, and then moved straight back and again traverse another diagonal line, and so on.'

The gearing will be so proportioned that the longitudinal component otl the distance between adjacent holes in the templct w ill correspond to the distance between the holes to be punched. In this Way a short templet can be made to punch a very long row of holes.

The levers 48 and 49 will be locatcd in a convenient position for observing thc operation of all parts of the nia-chine. rl`hc lorm of gearing shown, as wcll as most of the inependently-controllable mechanisms for moving the templet and Work supports in unison both laterally and longitudinally, and mechanism brought into operation by thc indexpin for actuating the tool.

2. In machines of the character speciiied, the combination of a templet-support, an index-pin cooperatingtherewith, a work-support, a tool cooperating therewith, independently-controllable mechanisms for moving the templetand work supports in unison both laterally and longitudinally, a circuit controlled bythe index-pin, and tool-actuating mechanism controlled by said circuit.

v3. In machines of the character specified, the combination of a templct-support, an index-pin cooperating thercw ith, a work-support, a tool cooperating therewith, hand-controlled mechanism for moving the tcmplet and Work supports in unison, gearing in said mechanism for moving the templet-snpport slower than the work-support, and mechanism brought into operation by the index-pin for actuating the tool.

4. In machinesof the character spcciiied, thel combination ofa templct-support, an index-pin cooperating therewithl a` worksupport, a tool co erating therewitli,`inde pendently-controlla le mechanisms for movinto operation by the index-pin for actuatingl thc tool.

5. In machines of the character specified, the combination of a templet-support, an index-pin cooperating therewith, a work-support, a tool cooperating therewith, mechanism lor moving the templct and work supports n unison, means for controlling saidsupport-movlng mechanism, mechanism brought into operation by the index-pin for actuating the tool, and means controlled by the control means for the support-moving mechanism for withdrawing said index-pin.

o. ln machines of the character specified, the combination of a templct-support, an i11- deX-pin cooperating therewith, `a work-sup-.

port, a tool cooperating.therewith, mechan; ism for moving sa1d work and templet sup'- ports in unison, means for control mg said support-moving mechanism, an electric cir-` cuit controlled by the index-pin, tool-actuating mechanism controlled by said circuit, and a switch and electromagnet for withdrawing the index-pin. v

7. In machincs of the character specified, the combination of a ternplct-support, an index-pin cooperating therew'th, a worksupport, a tool cooperating therewith, mechanism for moving said templct'and Work supports in unison, an clcctric circuit controlled by thc index-pin, a tool-controlling magnct,v

a pin-withdrawing magnct, and circuit and switch connections arranged to energize saldmagncts in succession.

8. In machines of the character specified, the combination of a templct-support, an index-pin coopc at ng thcrcwith, a worksupport, a tool cooperating therewith, nicchanism for moving said supports in unison, an electric circuit controlled by the indrxpin, tool-controlling mrchanism in said circuit, a pin withdrawing magnet, a switch for controlling said niagnrt, and means for operating said switch and controlling thc work and templet support mov ng mcclianism.

9. In machincs of hc character spccficd, the combination of a templct-support, an index-pin cooperating thercwith, a worksupport, a tool cooperating therewith, nicchanism for moving said supports in unison, moans for controlling said support-moving mechanism, a tool-controlling magnet, an in(lcX-pin-withdrawing niagnct, a switch and circu t connections for cncrgizing said niagnrts in sucecssion, said circuit bring controllcd by thciindeX-pin, and connections bctwccn said switch and controlling nicans.

l0. In machines olithc character spcci'licd, the combination of a tcinplct-support, an indcX- pin cooperating thcrcwith, a worksupport, a tool cooperating therewith, mechwhen said moving mechanism is inactive the anda pin-withdrawing magnet connected to the circuit, and control mechanism so arl ranged thatI when the support-feedin mech anism is activethe circult will be bro en and circuit will be closed. 11. In machines ofthe character specified,

the combination of` a templet, an index-pin cooperatingl therewith, a work-support, ay

too coperating therewith, mechanism for moving the templet and work support in unison, a hand-operated controller for said mechanism, an electric circuit closed by the in when it registers with points on the tem et, and tool-actuatingmechanism controlled by said circuit. l'

12. In machines of the character specified, thecombination of a templet, anindeX-pin coperating `therewith, a work-support, a tool copera'ting therewith, mechamsmri'or moving` the tem let4 and work supports in unison, a contro ler for said mechanism, an electric circuit arranged to be closed by the pin when it registerswithpoints on the temlet, tool-actuating mechanism controlled y said circuit, and a switch in the circuit arranged to be closed only when the controllerv for the work-support and templet moving 4 mechanism is brought to neutral position.

13. In machines ofthe character specified,

the combination of a templet, an index-pin' coperating therewith, a work-support, a

moving said' templet and work support in unison, a controller for said mechanism, an electric circuit closed by the pin when it reg# isters with points on the templet, a pin-withdrawing magnet, circuit connections thereto,

coperating therewith, mechanism for index-pin co erating therewith, a 'work-H" support, a too `co erating therewith, inde-- endently-controlla le mechanisms .formovmg the templet andwork su ports -in -unison both laterall and longitu inally,'frictionears in sai mechanisms, and mechanism rought into operation by the index-pin for actuating the tool. 15. In machines of the character specified,

the combination of a templet, an index-pin'- c`operating therewith, a work-support, a tool cooperating therewith, mechamsm'for moving the templet and work vsupport inl' unison, said mechanism ncludng a frictionwhcel movable over the face of a disk havin a neutral zone, means for moving said whee mechanism controlled 'b the index-pin for actuating the tool', an pin withdrawing means actuated from .the wheelmoving means when said wheel is in the neutral zone on the dsik.

16. In machines of the character specified,

the combination .of a templct, an lindex-pin coperating therewith, a work-support, a

tool cooperating therewith, mechanism for moving the templet and Work support m unison, said mechanism including a frictionwheel movable over the face of a disk having a neutral.zone, means for moving Said friction-wheel, a circuit arranged to be closed by the indexin when it registerswith points on the temp et, a toolactuat`i tion-wheel-moving Ameans and arranged. to close said circuitsonlywhen the frictionwheel is in theneutralzone on the disk-andv m'gltfn said circuit, a `pin-withdrawing magnet, and,"L i switch mechanismpcontrolled from the flic-" 

